HCX migration fails with "Network I/O admission control (NIOC) check failed for Ethernet device(s)" when source DVS has Network I/O enabled.

Products

• VMware HCX

Issue/Introduction

• Source DVS has Network I/O enabled. 
• HCX bulk migration failed for some VMs during the power-on event with the following error. 

  PowerOn task 'task-####' for Virtual Machine 'vm-####' failed due to'(vim.fault.GenericVmConfigFault) { faultCause = null, faultMessage =
  (vmodl.LocalizableMessage[com.vmware.vim.binding.impl.vmodl.LocalizableMessagelmpl@######,com.vmware.vim.binding.impl.vmodl.LocalizableMessagelmpl@######,com.vmware.vim.binding.impl.vmodl.LocalizableMessagelmpl@5###### ],
  reason = Network I/O admission control (NIOC) check failed for Ethernet
  device(s): 1(bitMap). Check the host network configuration for available
  bandwidth for reservation. Please try these actions manually

  

Environment

VMware HCX 

Cause

The migration failure is caused by a configuration mismatch between the source and destination Distributed Virtual Switches (DVS). 

Resolution

To resolve this issue, you must enable Network I/O Control on the destination Distributed Switch to match the source configuration.

• Log in to the vSphere Client.
• Navigate to the Inventory and select the destination Distributed Switch.
• Click on the Configure tab.
• Under Settings, select Edit.
• Set the Network I/O Control status to Enabled, then click OK.
• Retry the virtual machine migration or PowerOn task.

Below is the screenshot for your reference

Additional Information

To know more about Network I/O Control, please refer to the documentation --> What is vSphere Network I/O Control